CN204696252U - A kind of dendroid earth electrode - Google Patents

A kind of dendroid earth electrode Download PDF

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Publication number
CN204696252U
CN204696252U CN201520417820.0U CN201520417820U CN204696252U CN 204696252 U CN204696252 U CN 204696252U CN 201520417820 U CN201520417820 U CN 201520417820U CN 204696252 U CN204696252 U CN 204696252U
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CN
China
Prior art keywords
electrode
dendroid
earth electrode
earth
diffusing
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Expired - Fee Related
Application number
CN201520417820.0U
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Chinese (zh)
Inventor
赵习武
邓长征
邱立
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China Three Gorges University CTGU
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China Three Gorges University CTGU
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Priority to CN201520417820.0U priority Critical patent/CN204696252U/en
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Expired - Fee Related legal-status Critical Current
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Abstract

A kind of dendroid earth electrode, comprise Ring earth electrode, Ring earth electrode is provided with four horizontal rays electrodes, dendroid electrode is provided with at the end of horizontal electrode, described Ring earth electrode, horizontal electrode, dendroid electrode are in the same plane, described dendroid electrode is made up of 3 equal end electrodes of length, and the end electrodes of both sides becomes the angle of 60 degree with middle end electrodes.The utility model can effectively improve earth electrode impact characteristics, reduces impulse earthed resistance; Make simple and easy, easy construction, avoid the constructional difficulties blindly increasing earth electrode length and bring, good resistance reducing effect can be played again; Simultaneously, at end installing dendroid electrode, add diffusing passage on the one hand, promote diffusing, distorted water flat fire line electrode end electric field, promotes the diffusing of end, is equivalent to the effective length increasing earth electrode on the other hand, promote the spark effect in diffusing process, reach the object reducing impulse earthed resistance.

Description

A kind of dendroid earth electrode
Technical field
The utility model relates to electrical grounding technical field, is specifically related to a kind of dendroid earth electrode.
Background technology
In the construction of wind energy turbine set, usually can arrange the earthing device of lightning current of releasing, impulse earthed resistance is the important parameter of wind energy turbine set preventing thunder earthing design, reduces the lightning protection level that Wind turbines impulse earthed resistance can significantly improve Wind turbines.Because Wind turbines often build arid area in, soil resistivity is very high, and in the research of Wind turbines ground connection electric property, long-standing subject matter is that under high soil resistivity, Wind turbines earth resistance is higher, the existing resistance measure effect that falls is not obvious, and the lightning protection level of Wind turbines is lower.
For the consideration of the normal safe operation and staff's personal safety that ensure Wind turbines, Wind turbines can arrange the earthing device of lightning current of releasing usually, Wind turbines all should be connected with earthing device by down conductor, earthing device will be embedded in below earth's surface, the earth resistance size of earthing device directly affects the lightning protection level of Wind turbines, whether the examination of earthing device is still qualified in sole criterion using power frequency earthing resistance, but in high-frequency, under the lightning current effect of amplitude, earth mat is let out in loose current course can produce spark effect and inductive effect, now power frequency characteristic truly cannot reflect the lightning protection effect of earthing device, need the impact characteristics considering earth electrode.In high soil resistivity, the diffusing ability of electric current is poor, and impulse earthed resistance is higher, the normal safe of wind power plant is run and and the personal safety of staff threaten.
In wind power plant construction project, in order to reduce the earth resistance of Wind turbines, the measure usually taked adopts the methods such as multiple stage Wind turbines earthing device is interconnected, earthing module, expansion the ground network area, Down conductor to reduce earth resistance.But in the work progress of reality; due to the increase of blower fan tower height degree; adjacent blower fan distant; direct employing multiple stage Wind turbines earthing device is interconnected can increase cost; and earth work usually can be subject to the restriction of contact area, earth resistance cannot be reduced by expanding the method such as ground network area and Down conductor.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned the deficiencies in the prior art, provides a kind of dendroid earth electrode.
To achieve these goals, the technical solution of the utility model is: a kind of dendroid earth electrode, comprise Ring earth electrode, Ring earth electrode is provided with four horizontal rays electrodes, dendroid electrode is provided with at the end of horizontal electrode, described Ring earth electrode, horizontal electrode, dendroid electrode are in the same plane, and described dendroid electrode is made up of 3 equal end electrodes of length, and the end electrodes of both sides becomes the angle of 60 degree with middle end electrodes.
Angle between described horizontal rays electrode is 90 degree, is equivalent to adds additional diffusing passage, and the increase decrease speed of electric current is very fast, reduce the inductance effect of electrode self, promote diffusing, increase the interelectrode distance of adjacent ray, can screen effect be reduced, promote the diffusion of electric current in soil.
The length ratio of described Ring earth electrode, horizontal rays electrode, end electrodes is 5:5:2, while meeting power frequency earthing resistance, meets the effective length requirement of earth electrode, can reduce the effect of electrode own inductance, make resistance reducing effect reach optimization.
Adopt said structure, the utility model can effectively improve earth electrode impact characteristics, reduces impulse earthed resistance; Make simple and easy, easy construction, avoid the constructional difficulties blindly increasing earth electrode length and bring, good resistance reducing effect can be played again; Simultaneously, at end installing dendroid electrode, add diffusing passage on the one hand, promote diffusing, distorted water flat fire line electrode end electric field, promotes the diffusing of end, is equivalent to the effective length increasing earth electrode on the other hand, promote the spark effect in diffusing process, reach the object reducing impulse earthed resistance.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail:
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, a kind of dendroid earth electrode, comprise Ring earth electrode 1, Ring earth electrode 1 is provided with four horizontal rays electrodes 2, dendroid electrode 3 is provided with at the end of horizontal electrode 2, described Ring earth electrode 1, horizontal electrode 2, dendroid electrode 3 are in the same plane, and described dendroid electrode 3 is made up of 3 equal end electrodes 4 of length, the end electrodes 4 of both sides and the angle of middle end electrodes 4 one-tenth 60 degree.
Angle between described horizontal rays electrode 2 is 90 degree, be equivalent to adds additional diffusing passage, the increase decrease speed of electric current is very fast, reduce the inductance effect of electrode self, promote diffusing, increase the interelectrode distance of adjacent ray, can screen effect be reduced, promote the diffusion of electric current in soil.
The length ratio of described Ring earth electrode 1, horizontal rays electrode 2, end electrodes 4 is 5:5:2, while meeting power frequency earthing resistance, meets the effective length requirement of earth electrode, can reduce the effect of electrode own inductance, make resistance reducing effect reach optimization.
Adopt said structure, the utility model can effectively improve earth electrode impact characteristics, reduces impulse earthed resistance; Make simple and easy, easy construction, avoids the constructional difficulties blindly increasing earth electrode length and bring, can play good resistance reducing effect again, simultaneously at end installing dendroid electrode, add diffusing passage on the one hand, promote diffusing, on the other hand distorted water flat fire line electrode end electric field, promote the diffusing of end, be equivalent to the effective length increasing earth electrode, promote the spark effect in diffusing process, reach the object reducing impulse earthed resistance.

Claims (3)

1. a dendroid earth electrode, comprise Ring earth electrode (1), it is characterized in that: Ring earth electrode (1) is provided with four horizontal rays electrodes (2), dendroid electrode (3) is provided with at the end of horizontal electrode (2), described Ring earth electrode (1), horizontal electrode (2), dendroid electrode (3) are in the same plane, described dendroid electrode (3) is made up of 3 equal end electrodes of length (4), and the end electrodes (4) of both sides becomes the angle of 60 degree with middle end electrodes (4).
2. a kind of dendroid earth electrode according to claim 1, is characterized in that: the angle between described horizontal rays electrode (2) is 90 degree.
3. a kind of dendroid earth electrode according to claim 1, is characterized in that: the length ratio of described Ring earth electrode (1), horizontal rays electrode (2), end electrodes (4) is 5:5:2.
CN201520417820.0U 2015-06-17 2015-06-17 A kind of dendroid earth electrode Expired - Fee Related CN204696252U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520417820.0U CN204696252U (en) 2015-06-17 2015-06-17 A kind of dendroid earth electrode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520417820.0U CN204696252U (en) 2015-06-17 2015-06-17 A kind of dendroid earth electrode

Publications (1)

Publication Number Publication Date
CN204696252U true CN204696252U (en) 2015-10-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520417820.0U Expired - Fee Related CN204696252U (en) 2015-06-17 2015-06-17 A kind of dendroid earth electrode

Country Status (1)

Country Link
CN (1) CN204696252U (en)

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20151007

Termination date: 20160617